Java文件内容读写

package regionForKeywords;

import java.io.*;

/**
* Created by huangjiahong on 2016/2/25.
*/
public class RegionKeywordExcelTransform {

public static void main(String[] args) {

String inputFileName="D:\\USER\\huangjiahong\\Desktop\\region.txt";
String outputFileName="D:\\USER\\huangjiahong\\Desktop\\regionKeywords.txt";
File file = new File(inputFileName);
String line=null;
int errline=0;
int regionN=0;

try {
BufferedReader reader =new BufferedReader(new FileReader(file));
File outFile = new File(outputFileName);
FileWriter write = new FileWriter(outputFileName, false);

if(!outFile.exists()){
outFile.createNewFile();
}
while (null != (line = reader.readLine())){
try {
String[] lineSplit=line.split("\t");
String regionName=lineSplit[0];
regionN++;
String keywords[]=lineSplit[1].split("\\|");
//专区名也索引进去
//                    if(regionN==1||regionN==15) {
write.write(regionName + "\t" + regionN + "\t" + regionName + "\n");

for (String kw : keywords) {
write.write(kw + "\t" + regionN + "\t" + regionName + "\n");
}
//                    }
}catch (ArrayIndexOutOfBoundsException a){
System.out.println((errline++)+":"+line);
a.printStackTrace();
}

}
reader.close();
write.close();

} catch (IOException e) {
e.printStackTrace();

}
System.out.println("finished");
}
}